1·This provides the ability to lock in profit margins and manage price risk, or alternatively, to speculate on the metals, softs and financial markets.
它可以控制利润率并管理价格风险，或者对金属，软商品和金融市场进行推测。
2·The paper analyses CFD commercial soft in-depth, puts forward some problems when CFD commercial softs are used in he underground excavation cluster of hydropower station and corresponding resolvent.
本文首先对目前常用的CFD商用软件进行了深入地分析，并提出了其在地下电站应用中的一些问题以及相应的解决方法。